<?php

namespace app\admin\model;

use think\Cache;
use think\Model;

class Building extends Model
{
    // 开启自动写入时间戳字段
    protected $autoWriteTimestamp = 'int';
    // 定义时间戳字段名
    protected $createTime = 'createtime';
    protected $updateTime = 'updatetime';

    public function companies()
    {
        return $this->belongsToMany('Company', 'company_building', 'company_id', 'building_id');
    }
}
